from flask import Flask, render_template


def register_errorhandlers(app: Flask) -> None:
    @app.errorhandler(400)
    def bad_request(e) -> tuple:
        content: dict = {'title':   'Bad Request',
                         'content': [('HTTP Status 400', 'The request is malformed and cannot be processed.')]}
        return render_template('generic.html', **content), 400

    @app.errorhandler(404)
    def not_found(e) -> tuple:
        content: dict = {'title':   'Not Found',
                         'content': [('HTTP Status 404', 'The requsted ressource was not found.')]}
        return render_template('generic.html', **content), 404

    @app.errorhandler(405)
    def method_not_allowed(e) -> tuple:
        content: dict = {'title':   'Method Not Allowed',
                         'content': [('HTTP Status 405', 'The requested method is not allowed for this ressource.')]}
        return render_template('generic.html', **content), 405

    @app.errorhandler(500)
    def internal_server_error(e) -> tuple:
        content: dict = {'title':   'Internal Server Error',
                         'content': [('HTTP Status 500', 'The request cannot be answered due to an internal server error.')]}
        return render_template('generic.html', **content), 500

    return